/**
 * marked - a markdown parser
 * Copyright (c) 2011-2014, Christopher Jeffrey. (MIT Licensed)
 * https://github.com/markedjs/marked
 */
// (function(root, markedRoot) {
'use strict'

/**
 * Block-Level Grammar
 */

const block = {
  newline: /^\n+/,
  code: /^( {4}[^\n]+\n*)+/,
  fences: noop,
  hr: /^ {0,3}((?:- *){3,}|(?:_ *){3,}|(?:\* *){3,})(?:\n+|$)/,
  heading: /^ *(#{1,6}) *([^\n]+?) *(?:#+ *)?(?:\n+|$)/,
  nptable: noop,
  blockquote: /^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/,
  list: /^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
  html:
    '^ {0,3}(?:' + // optional indentation
    '<(script|pre|style)[\\s>][\\s\\S]*?(?:</\\1>[^\\n]*\\n+|$)' + // (1)
    '|comment[^\\n]*(\\n+|$)' + // (2)
    '|<\\?[\\s\\S]*?\\?>\\n*' + // (3)
    '|<![A-Z][\\s\\S]*?>\\n*' + // (4)
    '|<!\\[CDATA\\[[\\s\\S]*?\\]\\]>\\n*' + // (5)
    '|</?(tag)(?: +|\\n|/?>)[\\s\\S]*?(?:\\n{2,}|$)' + // (6)
    '|<(?!script|pre|style)([a-z][\\w-]*)(?:attribute)*? */?>(?=\\h*\\n)[\\s\\S]*?(?:\\n{2,}|$)' + // (7) open tag
    '|</(?!script|pre|style)[a-z][\\w-]*\\s*>(?=\\h*\\n)[\\s\\S]*?(?:\\n{2,}|$)' + // (7) closing tag
    ')',
  def: /^ {0,3}\[(label)\]: *\n? *<?([^\s>]+)>?(?:(?: +\n? *| *\n *)(title))? *(?:\n+|$)/,
  table: noop,
  lheading: /^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,
  paragraph:
    /^([^\n]+(?:\n(?!hr|heading|lheading| {0,3}>|<\/?(?:tag)(?: +|\n|\/?>)|<(?:script|pre|style|!--))[^\n]+)*)/,
  text: /^[^\n]+/,
}

block._label = /(?!\s*\])(?:\\[\[\]]|[^\[\]])+/
block._title = /(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/
block.def = edit(block.def).replace('label', block._label).replace('title', block._title).getRegex()

block.bullet = /(?:[*+-]|\d+\.)/
block.item = /^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/
block.item = edit(block.item, 'gm').replace(/bull/g, block.bullet).getRegex()

block.list = edit(block.list)
  .replace(/bull/g, block.bullet)
  .replace('hr', '\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))')
  .replace('def', '\\n+(?=' + block.def.source + ')')
  .getRegex()

block._tag =
  'address|article|aside|base|basefont|blockquote|body|caption' +
  '|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption' +
  '|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe' +
  '|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option' +
  '|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr' +
  '|track|ul'
block._comment = /<!--(?!-?>)[\s\S]*?-->/
block.html = edit(block.html, 'i')
  .replace('comment', block._comment)
  .replace('tag', block._tag)
  .replace('attribute', / +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/)
  .getRegex()

block.paragraph = edit(block.paragraph)
  .replace('hr', block.hr)
  .replace('heading', block.heading)
  .replace('lheading', block.lheading)
  .replace('tag', block._tag) // pars can be interrupted by type (6) html blocks
  .getRegex()

block.blockquote = edit(block.blockquote).replace('paragraph', block.paragraph).getRegex()

/**
 * Normal Block Grammar
 */

block.normal = merge({}, block)

/**
 * GFM Block Grammar
 */

block.gfm = merge({}, block.normal, {
  fences: /^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n([\s\S]*?)\n? *\1 *(?:\n+|$)/,
  paragraph: /^/,
  heading: /^ *(#{1,6}) +([^\n]+?) *#* *(?:\n+|$)/,
})

block.gfm.paragraph = edit(block.paragraph)
  .replace(
    '(?!',
    '(?!' +
      block.gfm.fences.source.replace('\\1', '\\2') +
      '|' +
      block.list.source.replace('\\1', '\\3') +
      '|',
  )
  .getRegex()

/**
 * GFM + Tables Block Grammar
 */

block.tables = merge({}, block.gfm, {
  nptable: /^ *([^|\n ].*\|.*)\n *([-:]+ *\|[-| :]*)(?:\n((?:.*[^>\n ].*(?:\n|$))*)\n*|$)/,
  table: /^ *\|(.+)\n *\|?( *[-:]+[-| :]*)(?:\n((?: *[^>\n ].*(?:\n|$))*)\n*|$)/,
})

/**
 * Pedantic grammar
 */

block.pedantic = merge({}, block.normal, {
  html: edit(
    '^ *(?:comment *(?:\\n|\\s*$)' +
      '|<(tag)[\\s\\S]+?</\\1> *(?:\\n{2,}|\\s*$)' + // closed tag
      '|<tag(?:"[^"]*"|\'[^\']*\'|\\s[^\'"/>\\s]*)*?/?> *(?:\\n{2,}|\\s*$))',
  )
    .replace('comment', block._comment)
    .replace(
      /tag/g,
      '(?!(?:' +
        'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub' +
        '|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)' +
        '\\b)\\w+(?!:|[^\\w\\s@]*@)\\b',
    )
    .getRegex(),
  def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/,
})

/**
 * Block Lexer
 */

function Lexer(options) {
  this.tokens = []
  this.tokens.links = Object.create(null)
  this.options = options || marked.defaults
  this.rules = block.normal

  if (this.options.pedantic) {
    this.rules = block.pedantic
  } else if (this.options.gfm) {
    if (this.options.tables) {
      this.rules = block.tables
    } else {
      this.rules = block.gfm
    }
  }
}

/**
 * Expose Block Rules
 */

Lexer.rules = block

/**
 * Static Lex Method
 */

Lexer.lex = function (src, options) {
  const lexer = new Lexer(options)
  return lexer.lex(src)
}

/**
 * Preprocessing
 */

Lexer.prototype.lex = function (src) {
  src = src
    .replace(/\r\n|\r/g, '\n')
    .replace(/\t/g, '    ')
    .replace(/\u00a0/g, ' ')
    .replace(/\u2424/g, '\n')

  return this.token(src, true)
}

/**
 * Lexing
 */

Lexer.prototype.token = function (src, top) {
  src = src.replace(/^ +$/gm, '')
  let next,
    loose,
    cap,
    bull,
    b,
    item,
    listStart,
    listItems,
    t,
    space,
    i,
    tag,
    l,
    isordered,
    istask,
    ischecked

  while (src) {
    // newline
    if ((cap = this.rules.newline.exec(src))) {
      src = src.substring(cap[0].length)
      if (cap[0].length > 1) {
        this.tokens.push({
          type: 'space',
        })
      }
    }

    // code
    if ((cap = this.rules.code.exec(src))) {
      src = src.substring(cap[0].length)
      cap = cap[0].replace(/^ {4}/gm, '')
      this.tokens.push({
        type: 'code',
        text: !this.options.pedantic ? rtrim(cap, '\n') : cap,
      })
      continue
    }

    // fences (gfm)
    if ((cap = this.rules.fences.exec(src))) {
      src = src.substring(cap[0].length)
      this.tokens.push({
        type: 'code',
        lang: cap[2],
        text: cap[3] || '',
      })
      continue
    }

    // heading
    if ((cap = this.rules.heading.exec(src))) {
      src = src.substring(cap[0].length)
      this.tokens.push({
        type: 'heading',
        depth: cap[1].length,
        text: cap[2],
      })
      continue
    }

    // table no leading pipe (gfm)
    if (top && (cap = this.rules.nptable.exec(src))) {
      item = {
        type: 'table',
        header: splitCells(cap[1].replace(/^ *| *\| *$/g, '')),
        align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
        cells: cap[3] ? cap[3].replace(/\n$/, '').split('\n') : [],
      }

      if (item.header.length === item.align.length) {
        src = src.substring(cap[0].length)

        for (i = 0; i < item.align.length; i++) {
          if (/^ *-+: *$/.test(item.align[i])) {
            item.align[i] = 'right'
          } else if (/^ *:-+: *$/.test(item.align[i])) {
            item.align[i] = 'center'
          } else if (/^ *:-+ *$/.test(item.align[i])) {
            item.align[i] = 'left'
          } else {
            item.align[i] = null
          }
        }

        for (i = 0; i < item.cells.length; i++) {
          item.cells[i] = splitCells(item.cells[i], item.header.length)
        }

        this.tokens.push(item)

        continue
      }
    }

    // hr
    if ((cap = this.rules.hr.exec(src))) {
      src = src.substring(cap[0].length)
      this.tokens.push({
        type: 'hr',
      })
      continue
    }

    // blockquote
    if ((cap = this.rules.blockquote.exec(src))) {
      src = src.substring(cap[0].length)

      this.tokens.push({
        type: 'blockquote_start',
      })

      cap = cap[0].replace(/^ *> ?/gm, '')

      // Pass `top` to keep the current
      // "toplevel" state. This is exactly
      // how markdown.pl works.
      this.token(cap, top)

      this.tokens.push({
        type: 'blockquote_end',
      })

      continue
    }

    // list
    if ((cap = this.rules.list.exec(src))) {
      src = src.substring(cap[0].length)
      bull = cap[2]
      isordered = bull.length > 1

      listStart = {
        type: 'list_start',
        ordered: isordered,
        start: isordered ? +bull : '',
        loose: false,
      }

      this.tokens.push(listStart)

      // Get each top-level item.
      cap = cap[0].match(this.rules.item)

      listItems = []
      next = false
      l = cap.length
      i = 0

      for (; i < l; i++) {
        item = cap[i]

        // Remove the list item's bullet
        // so it is seen as the next token.
        space = item.length
        item = item.replace(/^ *([*+-]|\d+\.) +/, '')

        // Outdent whatever the
        // list item contains. Hacky.
        if (~item.indexOf('\n ')) {
          space -= item.length
          item = !this.options.pedantic
            ? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '')
            : item.replace(/^ {1,4}/gm, '')
        }

        // Determine whether the next list item belongs here.
        // Backpedal if it does not belong in this list.
        if (this.options.smartLists && i !== l - 1) {
          b = block.bullet.exec(cap[i + 1])[0]
          if (bull !== b && !(bull.length > 1 && b.length > 1)) {
            src = cap.slice(i + 1).join('\n') + src
            i = l - 1
          }
        }

        // Determine whether item is loose or not.
        // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
        // for discount behavior.
        loose = next || /\n\n(?!\s*$)/.test(item)
        if (i !== l - 1) {
          next = item.charAt(item.length - 1) === '\n'
          if (!loose) loose = next
        }

        if (loose) {
          listStart.loose = true
        }

        // Check for task list items
        istask = /^\[[ xX]\] /.test(item)
        ischecked = undefined
        if (istask) {
          ischecked = item[1] !== ' '
          item = item.replace(/^\[[ xX]\] +/, '')
        }

        t = {
          type: 'list_item_start',
          task: istask,
          checked: ischecked,
          loose,
        }

        listItems.push(t)
        this.tokens.push(t)

        // Recurse.
        this.token(item, false)

        this.tokens.push({
          type: 'list_item_end',
        })
      }

      if (listStart.loose) {
        l = listItems.length
        i = 0
        for (; i < l; i++) {
          listItems[i].loose = true
        }
      }

      this.tokens.push({
        type: 'list_end',
      })

      continue
    }

    // html
    if ((cap = this.rules.html.exec(src))) {
      src = src.substring(cap[0].length)
      this.tokens.push({
        type: this.options.sanitize ? 'paragraph' : 'html',
        pre:
          !this.options.sanitizer &&
          (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
        text: cap[0],
      })
      continue
    }

    // def
    if (top && (cap = this.rules.def.exec(src))) {
      src = src.substring(cap[0].length)
      if (cap[3]) cap[3] = cap[3].substring(1, cap[3].length - 1)
      tag = cap[1].toLowerCase().replace(/\s+/g, ' ')
      if (!this.tokens.links[tag]) {
        this.tokens.links[tag] = {
          href: cap[2],
          title: cap[3],
        }
      }
      continue
    }

    // table (gfm)
    if (top && (cap = this.rules.table.exec(src))) {
      item = {
        type: 'table',
        header: splitCells(cap[1].replace(/^ *| *\| *$/g, '')),
        align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
        cells: cap[3] ? cap[3].replace(/(?: *\| *)?\n$/, '').split('\n') : [],
      }

      if (item.header.length === item.align.length) {
        src = src.substring(cap[0].length)

        for (i = 0; i < item.align.length; i++) {
          if (/^ *-+: *$/.test(item.align[i])) {
            item.align[i] = 'right'
          } else if (/^ *:-+: *$/.test(item.align[i])) {
            item.align[i] = 'center'
          } else if (/^ *:-+ *$/.test(item.align[i])) {
            item.align[i] = 'left'
          } else {
            item.align[i] = null
          }
        }

        for (i = 0; i < item.cells.length; i++) {
          item.cells[i] = splitCells(
            item.cells[i].replace(/^ *\| *| *\| *$/g, ''),
            item.header.length,
          )
        }

        this.tokens.push(item)

        continue
      }
    }

    // lheading
    if ((cap = this.rules.lheading.exec(src))) {
      src = src.substring(cap[0].length)
      this.tokens.push({
        type: 'heading',
        depth: cap[2] === '=' ? 1 : 2,
        text: cap[1],
      })
      continue
    }

    // top-level paragraph
    if (top && (cap = this.rules.paragraph.exec(src))) {
      src = src.substring(cap[0].length)
      this.tokens.push({
        type: 'paragraph',
        text: cap[1].charAt(cap[1].length - 1) === '\n' ? cap[1].slice(0, -1) : cap[1],
      })
      continue
    }

    // text
    if ((cap = this.rules.text.exec(src))) {
      // Top-level should never reach here.
      src = src.substring(cap[0].length)
      this.tokens.push({
        type: 'text',
        text: cap[0],
      })
      continue
    }

    if (src) {
      throw new Error('Infinite loop on byte: ' + src.charCodeAt(0))
    }
  }

  return this.tokens
}

/**
 * Inline-Level Grammar
 */

const inline = {
  escape: /^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,
  autolink: /^<(scheme:[^\s\x00-\x1f<>]*|email)>/,
  url: noop,
  tag:
    '^comment' +
    '|^</[a-zA-Z][\\w:-]*\\s*>' + // self-closing tag
    '|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>' + // open tag
    '|^<\\?[\\s\\S]*?\\?>' + // processing instruction, e.g. <?php ?>
    '|^<![a-zA-Z]+\\s[\\s\\S]*?>' + // declaration, e.g. <!DOCTYPE html>
    '|^<!\\[CDATA\\[[\\s\\S]*?\\]\\]>', // CDATA section
  link: /^!?\[(label)\]\(href(?:\s+(title))?\s*\)/,
  reflink: /^!?\[(label)\]\[(?!\s*\])((?:\\[\[\]]?|[^\[\]\\])+)\]/,
  nolink: /^!?\[(?!\s*\])((?:\[[^\[\]]*\]|\\[\[\]]|[^\[\]])*)\](?:\[\])?/,
  strong:
    /^__([^\s])__(?!_)|^\*\*([^\s])\*\*(?!\*)|^__([^\s][\s\S]*?[^\s])__(?!_)|^\*\*([^\s][\s\S]*?[^\s])\*\*(?!\*)/,
  em: /^_([^\s_])_(?!_)|^\*([^\s*"<\[])\*(?!\*)|^_([^\s][\s\S]*?[^\s_])_(?!_)|^_([^\s_][\s\S]*?[^\s])_(?!_)|^\*([^\s"<\[][\s\S]*?[^\s*])\*(?!\*)|^\*([^\s*"<\[][\s\S]*?[^\s])\*(?!\*)/,
  code: /^(`+)\s*([\s\S]*?[^`]?)\s*\1(?!`)/,
  br: /^( {2,}|\\)\n(?!\s*$)/,
  del: noop,
  text: /^[\s\S]+?(?=[\\<!\[`*]|\b_| {2,}\n|$)/,
}

inline._escapes = /\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g

inline._scheme = /[a-zA-Z][a-zA-Z0-9+.-]{1,31}/
inline._email =
  /[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/
inline.autolink = edit(inline.autolink)
  .replace('scheme', inline._scheme)
  .replace('email', inline._email)
  .getRegex()

inline._attribute = /\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/

inline.tag = edit(inline.tag)
  .replace('comment', block._comment)
  .replace('attribute', inline._attribute)
  .getRegex()

inline._label = /(?:\[[^\[\]]*\]|\\[\[\]]?|`[^`]*`|[^\[\]\\])*?/
inline._href =
  /\s*(<(?:\\[<>]?|[^\s<>\\])*>|(?:\\[()]?|\([^\s\x00-\x1f\\]*\)|[^\s\x00-\x1f()\\])*?)/
inline._title = /"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/

inline.link = edit(inline.link)
  .replace('label', inline._label)
  .replace('href', inline._href)
  .replace('title', inline._title)
  .getRegex()

inline.reflink = edit(inline.reflink).replace('label', inline._label).getRegex()

/**
 * Normal Inline Grammar
 */

inline.normal = merge({}, inline)

/**
 * Pedantic Inline Grammar
 */

inline.pedantic = merge({}, inline.normal, {
  strong: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
  em: /^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/,
  link: edit(/^!?\[(label)\]\((.*?)\)/)
    .replace('label', inline._label)
    .getRegex(),
  reflink: edit(/^!?\[(label)\]\s*\[([^\]]*)\]/)
    .replace('label', inline._label)
    .getRegex(),
})

/**
 * GFM Inline Grammar
 */

inline.gfm = merge({}, inline.normal, {
  escape: edit(inline.escape).replace('])', '~|])').getRegex(),
  url: edit(/^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/)
    .replace('email', inline._email)
    .getRegex(),
  _backpedal: /(?:[^?!.,:;*_~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_~)]+(?!$))+/,
  del: /^~+(?=\S)([\s\S]*?\S)~+/,
  text: edit(inline.text)
    .replace(']|', '~]|')
    .replace('|', "|https?://|ftp://|www\\.|[a-zA-Z0-9.!#$%&'*+/=?^_`{\\|}~-]+@|")
    .getRegex(),
})

/**
 * GFM + Line Breaks Inline Grammar
 */

inline.breaks = merge({}, inline.gfm, {
  br: edit(inline.br).replace('{2,}', '*').getRegex(),
  text: edit(inline.gfm.text).replace('{2,}', '*').getRegex(),
})

/**
 * Inline Lexer & Compiler
 */

function InlineLexer(links, options) {
  this.options = options || marked.defaults
  this.links = links
  this.rules = inline.normal
  this.renderer = this.options.renderer || new Renderer()
  this.renderer.options = this.options

  if (!this.links) {
    throw new Error('Tokens array requires a `links` property.')
  }

  if (this.options.pedantic) {
    this.rules = inline.pedantic
  } else if (this.options.gfm) {
    if (this.options.breaks) {
      this.rules = inline.breaks
    } else {
      this.rules = inline.gfm
    }
  }
}

/**
 * Expose Inline Rules
 */

InlineLexer.rules = inline

/**
 * Static Lexing/Compiling Method
 */

InlineLexer.output = function (src, links, options) {
  const inline = new InlineLexer(links, options)
  return inline.output(src)
}

/**
 * Lexing/Compiling
 */

InlineLexer.prototype.output = function (src) {
  let out = ''
  let link
  let text
  let href
  let title
  let cap
  let prevCapZero

  while (src) {
    // escape
    if ((cap = this.rules.escape.exec(src))) {
      src = src.substring(cap[0].length)
      out += cap[1]
      continue
    }

    // autolink
    if ((cap = this.rules.autolink.exec(src))) {
      src = src.substring(cap[0].length)
      if (cap[2] === '@') {
        text = escape(this.mangle(cap[1]))
        href = 'mailto:' + text
      } else {
        text = escape(cap[1])
        href = text
      }
      out += this.renderer.link(href, null, text)
      continue
    }

    // url (gfm)
    if (!this.inLink && (cap = this.rules.url.exec(src))) {
      do {
        prevCapZero = cap[0]
        cap[0] = this.rules._backpedal.exec(cap[0])[0]
      } while (prevCapZero !== cap[0])
      src = src.substring(cap[0].length)
      if (cap[2] === '@') {
        text = escape(cap[0])
        href = 'mailto:' + text
      } else {
        text = escape(cap[0])
        if (cap[1] === 'www.') {
          href = 'http://' + text
        } else {
          href = text
        }
      }
      out += this.renderer.link(href, null, text)
      continue
    }

    // tag
    if ((cap = this.rules.tag.exec(src))) {
      if (!this.inLink && /^<a /i.test(cap[0])) {
        this.inLink = true
      } else if (this.inLink && /^<\/a>/i.test(cap[0])) {
        this.inLink = false
      }
      src = src.substring(cap[0].length)
      out += this.options.sanitize
        ? this.options.sanitizer
          ? this.options.sanitizer(cap[0])
          : escape(cap[0])
        : cap[0]
      continue
    }

    // link
    if ((cap = this.rules.link.exec(src))) {
      src = src.substring(cap[0].length)
      this.inLink = true
      href = cap[2]
      if (this.options.pedantic) {
        link = /^([^'"]*[^\s])\s+(['"])(.*)\2/.exec(href)

        if (link) {
          href = link[1]
          title = link[3]
        } else {
          title = ''
        }
      } else {
        title = cap[3] ? cap[3].slice(1, -1) : ''
      }
      href = href.trim().replace(/^<([\s\S]*)>$/, '$1')
      out += this.outputLink(cap, {
        href: InlineLexer.escapes(href),
        title: InlineLexer.escapes(title),
      })
      this.inLink = false
      continue
    }

    // reflink, nolink
    if ((cap = this.rules.reflink.exec(src)) || (cap = this.rules.nolink.exec(src))) {
      src = src.substring(cap[0].length)
      link = (cap[2] || cap[1]).replace(/\s+/g, ' ')
      link = this.links[link.toLowerCase()]
      if (!link || !link.href) {
        out += cap[0].charAt(0)
        src = cap[0].substring(1) + src
        continue
      }
      this.inLink = true
      out += this.outputLink(cap, link)
      this.inLink = false
      continue
    }

    // strong
    if ((cap = this.rules.strong.exec(src))) {
      src = src.substring(cap[0].length)
      out += this.renderer.strong(this.output(cap[4] || cap[3] || cap[2] || cap[1]))
      continue
    }

    // em
    if ((cap = this.rules.em.exec(src))) {
      src = src.substring(cap[0].length)
      out += this.renderer.em(this.output(cap[6] || cap[5] || cap[4] || cap[3] || cap[2] || cap[1]))
      continue
    }

    // code
    if ((cap = this.rules.code.exec(src))) {
      src = src.substring(cap[0].length)
      out += this.renderer.codespan(escape(cap[2].trim(), true))
      continue
    }

    // br
    if ((cap = this.rules.br.exec(src))) {
      src = src.substring(cap[0].length)
      out += this.renderer.br()
      continue
    }

    // del (gfm)
    if ((cap = this.rules.del.exec(src))) {
      src = src.substring(cap[0].length)
      out += this.renderer.del(this.output(cap[1]))
      continue
    }

    // text
    if ((cap = this.rules.text.exec(src))) {
      src = src.substring(cap[0].length)
      out += this.renderer.text(escape(this.smartypants(cap[0])))
      continue
    }

    if (src) {
      throw new Error('Infinite loop on byte: ' + src.charCodeAt(0))
    }
  }

  return out
}

InlineLexer.escapes = function (text) {
  return text ? text.replace(InlineLexer.rules._escapes, '$1') : text
}

/**
 * Compile Link
 */

InlineLexer.prototype.outputLink = function (cap, link) {
  const href = link.href
  const title = link.title ? escape(link.title) : null

  return cap[0].charAt(0) !== '!'
    ? this.renderer.link(href, title, this.output(cap[1]))
    : this.renderer.image(href, title, escape(cap[1]))
}

/**
 * Smartypants Transformations
 */

InlineLexer.prototype.smartypants = function (text) {
  if (!this.options.smartypants) return text
  return (
    text
      // em-dashes
      .replace(/---/g, '\u2014')
      // en-dashes
      .replace(/--/g, '\u2013')
      // opening singles
      .replace(/(^|[-\u2014/(\[{"\s])'/g, '$1\u2018')
      // closing singles & apostrophes
      .replace(/'/g, '\u2019')
      // opening doubles
      .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
      // closing doubles
      .replace(/"/g, '\u201d')
      // ellipses
      .replace(/\.{3}/g, '\u2026')
  )
}

/**
 * Mangle Links
 */

InlineLexer.prototype.mangle = function (text) {
  if (!this.options.mangle) return text
  let out = ''
  const l = text.length
  let i = 0
  let ch

  for (; i < l; i++) {
    ch = text.charCodeAt(i)
    if (Math.random() > 0.5) {
      ch = 'x' + ch.toString(16)
    }
    out += '&#' + ch + ';'
  }

  return out
}

/**
 * Renderer
 */

function Renderer(options) {
  this.options = options || marked.defaults
}

Renderer.prototype.code = function (code, lang, escaped) {
  if (this.options.highlight) {
    const out = this.options.highlight(code, lang)
    if (out != null && out !== code) {
      escaped = true
      code = out
    }
  }

  if (!lang) {
    return '<pre><code>' + (escaped ? code : escape(code, true)) + '</code></pre>'
  }

  return (
    '<pre><code class="' +
    this.options.langPrefix +
    escape(lang, true) +
    '">' +
    (escaped ? code : escape(code, true)) +
    '</code></pre>\n'
  )
}

Renderer.prototype.blockquote = function (quote) {
  return '<blockquote>\n' + quote + '</blockquote>\n'
}

Renderer.prototype.html = function (html) {
  return html
}

Renderer.prototype.heading = function (text, level, raw) {
  if (this.options.headerIds) {
    return (
      '<h' +
      level +
      ' id="' +
      this.options.headerPrefix +
      raw.toLowerCase().replace(/[^\w]+/g, '-') +
      '">' +
      text +
      '</h' +
      level +
      '>\n'
    )
  }
  // ignore IDs
  return '<h' + level + '>' + text + '</h' + level + '>\n'
}

Renderer.prototype.hr = function () {
  return this.options.xhtml ? '<hr/>\n' : '<hr>\n'
}

Renderer.prototype.list = function (body, ordered, start) {
  const type = ordered ? 'ol' : 'ul'
  const startatt = ordered && start !== 1 ? ' start="' + start + '"' : ''
  return '<' + type + startatt + '>\n' + body + '</' + type + '>\n'
}

Renderer.prototype.listitem = function (text) {
  return '<li>' + text + '</li>\n'
}

Renderer.prototype.checkbox = function (checked) {
  return (
    '<input ' +
    (checked ? 'checked="" ' : '') +
    'disabled="" type="checkbox"' +
    (this.options.xhtml ? ' /' : '') +
    '> '
  )
}

Renderer.prototype.paragraph = function (text) {
  return '<p>' + text + '</p>\n'
}

Renderer.prototype.table = function (header, body) {
  if (body) body = '<tbody>' + body + '</tbody>'

  return '<table>\n' + '<thead>\n' + header + '</thead>\n' + body + '</table>\n'
}

Renderer.prototype.tablerow = function (content) {
  return '<tr>\n' + content + '</tr>\n'
}

Renderer.prototype.tablecell = function (content, flags) {
  const type = flags.header ? 'th' : 'td'
  const tag = flags.align ? '<' + type + ' align="' + flags.align + '">' : '<' + type + '>'
  return tag + content + '</' + type + '>\n'
}

// span level renderer
Renderer.prototype.strong = function (text) {
  return '<strong>' + text + '</strong>'
}

Renderer.prototype.em = function (text) {
  return '<em>' + text + '</em>'
}

Renderer.prototype.codespan = function (text) {
  return '<code>' + text + '</code>'
}

Renderer.prototype.br = function () {
  return this.options.xhtml ? '<br/>' : '<br>'
}

Renderer.prototype.del = function (text) {
  return '<del>' + text + '</del>'
}

Renderer.prototype.link = function (href, title, text) {
  if (this.options.sanitize) {
    try {
      var prot = decodeURIComponent(unescape(href))
        .replace(/[^\w:]/g, '')
        .toLowerCase()
    } catch (e) {
      return text
    }
    if (
      prot.indexOf('javascript:') === 0 ||
      prot.indexOf('vbscript:') === 0 ||
      prot.indexOf('data:') === 0
    ) {
      return text
    }
  }
  if (this.options.baseUrl && !originIndependentUrl.test(href)) {
    href = resolveUrl(this.options.baseUrl, href)
  }
  try {
    href = encodeURI(href).replace(/%25/g, '%')
  } catch (e) {
    return text
  }
  let out = '<a href="' + escape(href) + '"'
  if (title) {
    out += ' title="' + title + '"'
  }
  out += '>' + text + '</a>'
  return out
}

Renderer.prototype.image = function (href, title, text) {
  if (this.options.baseUrl && !originIndependentUrl.test(href)) {
    href = resolveUrl(this.options.baseUrl, href)
  }
  let out = '<img src="' + href + '" alt="' + text + '"'
  if (title) {
    out += ' title="' + title + '"'
  }
  out += this.options.xhtml ? '/>' : '>'
  return out
}

Renderer.prototype.text = function (text) {
  return text
}

/**
 * TextRenderer
 * returns only the textual part of the token
 */

function TextRenderer() {}

// no need for block level renderers

TextRenderer.prototype.strong =
  TextRenderer.prototype.em =
  TextRenderer.prototype.codespan =
  TextRenderer.prototype.del =
  TextRenderer.prototype.text =
    function (text) {
      return text
    }

TextRenderer.prototype.link = TextRenderer.prototype.image = function (href, title, text) {
  return '' + text
}

TextRenderer.prototype.br = function () {
  return ''
}

/**
 * Parsing & Compiling
 */

function Parser(options) {
  this.tokens = []
  this.token = null
  this.options = options || marked.defaults
  this.options.renderer = this.options.renderer || new Renderer()
  this.renderer = this.options.renderer
  this.renderer.options = this.options
}

/**
 * Static Parse Method
 */

Parser.parse = function (src, options) {
  const parser = new Parser(options)
  return parser.parse(src)
}

/**
 * Parse Loop
 */

Parser.prototype.parse = function (src) {
  this.inline = new InlineLexer(src.links, this.options)
  // use an InlineLexer with a TextRenderer to extract pure text
  this.inlineText = new InlineLexer(
    src.links,
    merge({}, this.options, {
      renderer: new TextRenderer(),
    }),
  )
  this.tokens = src.reverse()

  let out = ''
  while (this.next()) {
    out += this.tok()
  }

  return out
}

/**
 * Next Token
 */

Parser.prototype.next = function () {
  return (this.token = this.tokens.pop())
}

/**
 * Preview Next Token
 */

Parser.prototype.peek = function () {
  return this.tokens[this.tokens.length - 1] || 0
}

/**
 * Parse Text Tokens
 */

Parser.prototype.parseText = function () {
  let body = this.token.text

  while (this.peek().type === 'text') {
    body += '\n' + this.next().text
  }

  return this.inline.output(body)
}

/**
 * Parse Current Token
 */

Parser.prototype.tok = function () {
  switch (this.token.type) {
    case 'space': {
      return ''
    }
    case 'hr': {
      return this.renderer.hr()
    }
    case 'heading': {
      return this.renderer.heading(
        this.inline.output(this.token.text),
        this.token.depth,
        unescape(this.inlineText.output(this.token.text)),
      )
    }
    case 'code': {
      return this.renderer.code(this.token.text, this.token.lang, this.token.escaped)
    }
    case 'table': {
      let header = ''
      var body = ''
      let i
      let row
      let cell
      let j

      // header
      cell = ''
      for (i = 0; i < this.token.header.length; i++) {
        cell += this.renderer.tablecell(this.inline.output(this.token.header[i]), {
          header: true,
          align: this.token.align[i],
        })
      }
      header += this.renderer.tablerow(cell)

      for (i = 0; i < this.token.cells.length; i++) {
        row = this.token.cells[i]

        cell = ''
        for (j = 0; j < row.length; j++) {
          cell += this.renderer.tablecell(this.inline.output(row[j]), {
            header: false,
            align: this.token.align[j],
          })
        }

        body += this.renderer.tablerow(cell)
      }
      return this.renderer.table(header, body)
    }
    case 'blockquote_start': {
      body = ''

      while (this.next().type !== 'blockquote_end') {
        body += this.tok()
      }

      return this.renderer.blockquote(body)
    }
    case 'list_start': {
      body = ''
      const ordered = this.token.ordered
      const start = this.token.start

      while (this.next().type !== 'list_end') {
        body += this.tok()
      }

      return this.renderer.list(body, ordered, start)
    }
    case 'list_item_start': {
      body = ''
      const loose = this.token.loose

      if (this.token.task) {
        body += this.renderer.checkbox(this.token.checked)
      }

      while (this.next().type !== 'list_item_end') {
        body += !loose && this.token.type === 'text' ? this.parseText() : this.tok()
      }

      return this.renderer.listitem(body)
    }
    case 'html': {
      // TODO parse inline content if parameter markdown=1
      return this.renderer.html(this.token.text)
    }
    case 'paragraph': {
      return this.renderer.paragraph(this.inline.output(this.token.text))
    }
    case 'text': {
      return this.renderer.paragraph(this.parseText())
    }
  }
}

/**
 * Helpers
 */

function escape(html, encode) {
  return html
    .replace(!encode ? /&(?!#?\w+;)/g : /&/g, '&amp;')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
    .replace(/"/g, '&quot;')
    .replace(/'/g, '&#39;')
}

function unescape(html) {
  // explicitly match decimal, hex, and named HTML entities
  return html.replace(/&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/gi, function (_, n) {
    n = n.toLowerCase()
    if (n === 'colon') return ':'
    if (n.charAt(0) === '#') {
      return n.charAt(1) === 'x'
        ? String.fromCharCode(parseInt(n.substring(2), 16))
        : String.fromCharCode(+n.substring(1))
    }
    return ''
  })
}

function edit(regex, opt) {
  regex = regex.source || regex
  opt = opt || ''
  return {
    replace: function (name, val) {
      val = val.source || val
      val = val.replace(/(^|[^\[])\^/g, '$1')
      regex = regex.replace(name, val)
      return this
    },
    getRegex: function () {
      return new RegExp(regex, opt)
    },
  }
}

function resolveUrl(base, href) {
  if (!baseUrls[' ' + base]) {
    // we can ignore everything in base after the last slash of its path component,
    // but we might need to add _that_
    // https://tools.ietf.org/html/rfc3986#section-3
    if (/^[^:]+:\/*[^/]*$/.test(base)) {
      baseUrls[' ' + base] = base + '/'
    } else {
      baseUrls[' ' + base] = rtrim(base, '/', true)
    }
  }
  base = baseUrls[' ' + base]

  if (href.slice(0, 2) === '//') {
    return base.replace(/:[\s\S]*/, ':') + href
  } else if (href.charAt(0) === '/') {
    return base.replace(/(:\/*[^/]*)[\s\S]*/, '$1') + href
  } else {
    return base + href
  }
}
var baseUrls = {}
var originIndependentUrl = /^$|^[a-z][a-z0-9+.-]*:|^[?#]/i

function noop() {}
noop.exec = noop

function merge(obj) {
  let i = 1
  let target
  let key

  for (; i < arguments.length; i++) {
    target = arguments[i]
    for (key in target) {
      if (Object.prototype.hasOwnProperty.call(target, key)) {
        obj[key] = target[key]
      }
    }
  }

  return obj
}

function splitCells(tableRow, count) {
  // ensure that every cell-delimiting pipe has a space
  // before it to distinguish it from an escaped pipe
  const row = tableRow.replace(/\|/g, function (match, offset, str) {
    let escaped = false
    let curr = offset
    while (--curr >= 0 && str[curr] === '\\') escaped = !escaped
    if (escaped) {
      // odd number of slashes means | is escaped
      // so we leave it alone
      return '|'
    } else {
      // add space before unescaped |
      return ' |'
    }
  })
  const cells = row.split(/ \|/)
  let i = 0

  if (cells.length > count) {
    cells.splice(count)
  } else {
    while (cells.length < count) cells.push('')
  }

  for (; i < cells.length; i++) {
    // leading or trailing whitespace is ignored per the gfm spec
    cells[i] = cells[i].trim().replace(/\\\|/g, '|')
  }
  return cells
}

// Remove trailing 'c's. Equivalent to str.replace(/c*$/, '').
// /c*$/ is vulnerable to REDOS.
// invert: Remove suffix of non-c chars instead. Default falsey.
function rtrim(str, c, invert) {
  if (str.length === 0) {
    return ''
  }

  // Length of suffix matching the invert condition.
  let suffLen = 0

  // Step left until we fail to match the invert condition.
  while (suffLen < str.length) {
    const currChar = str.charAt(str.length - suffLen - 1)
    if (currChar === c && !invert) {
      suffLen++
    } else if (currChar !== c && invert) {
      suffLen++
    } else {
      break
    }
  }

  return str.substr(0, str.length - suffLen)
}

/**
 * Marked
 */

function marked(src, opt, callback) {
  // throw error in case of non string input
  if (typeof src === 'undefined' || src === null) {
    throw new Error('marked(): input parameter is undefined or null')
  }
  if (typeof src !== 'string') {
    throw new Error(
      'marked(): input parameter is of type ' +
        Object.prototype.toString.call(src) +
        ', string expected',
    )
  }

  if (callback || typeof opt === 'function') {
    if (!callback) {
      callback = opt
      opt = null
    }

    opt = merge({}, marked.defaults, opt || {})

    const highlight = opt.highlight
    let tokens
    let pending
    let i = 0

    try {
      tokens = Lexer.lex(src, opt)
    } catch (e) {
      return callback(e)
    }

    pending = tokens.length

    const done = function (err) {
      if (err) {
        opt.highlight = highlight
        return callback(err)
      }

      let out

      try {
        out = Parser.parse(tokens, opt)
      } catch (e) {
        err = e
      }

      opt.highlight = highlight

      return err ? callback(err) : callback(null, out)
    }

    if (!highlight || highlight.length < 3) {
      return done()
    }

    delete opt.highlight

    if (!pending) return done()

    for (; i < tokens.length; i++) {
      ;(function (token) {
        if (token.type !== 'code') {
          return --pending || done()
        }
        return highlight(token.text, token.lang, function (err, code) {
          if (err) return done(err)
          if (code == null || code === token.text) {
            return --pending || done()
          }
          token.text = code
          token.escaped = true
          --pending || done()
        })
      })(tokens[i])
    }

    return
  }
  try {
    if (opt) opt = merge({}, marked.defaults, opt)
    return Parser.parse(Lexer.lex(src, opt), opt)
  } catch (e) {
    e.message += '\nPlease report this to https://github.com/markedjs/marked.'
    if ((opt || marked.defaults).silent) {
      return '<p>An error occurred:</p><pre>' + escape(e.message + '', true) + '</pre>'
    }
    throw e
  }
}

/**
 * Options
 */

marked.options = marked.setOptions = function (opt) {
  merge(marked.defaults, opt)
  return marked
}

marked.getDefaults = function () {
  return {
    baseUrl: null,
    breaks: false,
    gfm: true,
    headerIds: true,
    headerPrefix: '',
    highlight: null,
    langPrefix: 'language-',
    mangle: true,
    pedantic: false,
    renderer: new Renderer(),
    sanitize: false,
    sanitizer: null,
    silent: false,
    smartLists: false,
    smartypants: false,
    tables: true,
    xhtml: false,
  }
}

marked.defaults = marked.getDefaults()

/**
 * Expose
 */

marked.Parser = Parser
marked.parser = Parser.parse

marked.Renderer = Renderer
marked.TextRenderer = TextRenderer

marked.Lexer = Lexer
marked.lexer = Lexer.lex

marked.InlineLexer = InlineLexer
marked.inlineLexer = InlineLexer.output

marked.parse = marked

// if (typeof module !== 'undefined' && typeof exports === 'object') {
//   module.exports = marked;
// } else if (typeof define === 'function' && define.amd) {
//   define(function() { return marked; });
// } else {
//   root.marked = marked;
// }
// })(this || (typeof window !== 'undefined' ? window : global));

export default marked
